冲积
【冲积】chōngjī
[alluviation] 水流速度减小的地方,水冲击的泥沙沉积下来
新华字典
edrTRBnvbvY1jJzjHqK2r0Zes6_szzIV
97e16cdc05ffd0c6688fc17768991c3c
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